Hakkında C# IStructuralEquatable nerelerde kullanılıyor

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The individual calls to IEqualityComparer.Equals end and the IStructuralEquatable.Equals method returns a value either when a method call returns false or after all array elements or tuple components have been compared.

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It differs from reference equality, which indicates that two object references are equal because they reference the same physical object.

Daniel A.A. PelsmaekerDaniel A.A. Pelsmaeker 49.2k2121 gold badges112112 silver badges160160 bronze badges 5 In addition to answers which point to duplicate hashcodes as is documented behavior, some reasoning and reflection would also lead you to the same conclusion.

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The IStructuralEquatable interface enables you to implement customized comparisons to check for the structural equality of collection objects.

Aynı sorunlemi her bir iterasyon dâhilin bir task oluşturup yapabiliyorken sebep Muvazi bir döngü oluşturmalıyız?

Consider that there are only ~4.2 billion different hashcodes. Gönül you create more than this many different objects of the type on which GetHashCode is called? In this case it is easy to see the answer is "yes". So GetHashCode is a sort of compressing projection onto a smaller seki - there are bound to be duplicates.

(doesn't violate documentation), but it is clearly hamiş kakım good birli it would be if 0 were replaced with i. Also there's no reason to loop if the code were just going to use a single value from the array.

I had the same question. When I ran LBushkin's example I was surprised to see that I got a different answer! Even though that answer başmaklık 8 upvotes, it is wrong. After a lot of 'reflector'ing, here is my take on things.

To achieve this, employee objects with matching SSN properties would be treated bey logically equal, even if they were hamiş structurally equal. Share Improve this answer Follow

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Just look at the default ValueType.Equals(object) code that gets called otherwise. It's an absolute performance killer that introduces boxing, type evaluation and finally falls back on reflection if any of the fields are reference types.

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